TARGET IC TAG DISCRIMINATION SYSTEM, TARGET IC TAG DISCRIMINATION APPARATUS, TARGET IC TAG DISCRIMINATION METHOD AND COMPUTER PROGRAM

摘要

Whether an IC tag is a target to be read or not is determined more surely than conventionally done. An actual read result is obtained as a result of reading an IC tag on a path a plurality of times (#12), an unnecessary tag read result which is a result of reading an IC tag assumed to be outside the path a plurality of times is estimated on the basis of the actual read result (#13), a typical read result which is a typical result obtained when an IC tag on the path is read a plurality of times is prepared (#14), and then first similarity which is the degree of similarity between the unnecessary tag read result and the actual read result is calculated and second similarity having a value higher than that of the first similarity is calculated. An object read result which is a result of reading an IC tag to be discriminated a plurality of times is obtained (#16), third similarity which is the degree of similarity between the object read result and the typical read result is calculated (#17), and then if the third similarity is higher than the second similarity, the IC tag to be discriminated is determined as a target (if Yes in #18, #19) and if the third similarity is lower than the second similarity, the IC tag to be discriminated is not determined as a target (if No in #18, #21).